unless

连接词

1. 1

   除非、否则

   We will cancel the picnic unless the weather improves by Friday.

   除非天气在星期五前转好，否则我们就取消野餐。

2. 2

   除非、要不是用于补充例外情况

   I'll meet you at seven, unless you'd rather come later.

   我七点跟你碰面，除非你想晚一点再来。

3. 3

   除非…并且直到正式；unless and until

   The contract stays in force unless and until both parties agree to end it.

   除非双方同意终止，这份合约在此之前都持续有效。